Electric horn.



C. E. AVERY.

ELECTRlC HORN.

APPLiCATI ON FILED OCT. 2, 1911.

Patented. July 27, 1915.

5 WW, wto'z Thaw. r3. ow agiqmattoznm ufi' W1 connected to the contact plate, the repeated vibrations of the armature would gradually crystallize and finally break the 'evire.

While my horn is adapted for use on automobiles, boats and the like, it is also well adapted for use for fire alarm signals, especially in factories using noisy machinery, and where consequently a loud, penetrating acoustic signal is of great importance. It is for thispurpose that I have constructed the inclosing casing with the supporting base plate E. i

I claim as my invention, 1. An electromagnetic signaling horn, comprising an electron'iagnet, armature, diaphragm and means by which the movements of the armature may be imparted to the diaph'agm, a spring plate supporting the CHARLES E. AVERY. Witnesses:

L. H. GRoTE, HEREBRT HOWSON. I 

